Post on 15-Dec-2015
description
transcript
2008-07
www.huawei.com
HUAWEI Confidential
Security Level: Internal Use
HUAWEI BTS3900 Hardware Structure
ISSUE4.0
Wireless Case and Training
HUAWEI TECHNOLOGIES Co., Ltd. Page 2HUAWEI Confidential
The BTS3900 developed by Huawei is an indoor macro BTS.
The BTS3900 mainly consists of the BBU and DRFUs.
Compared with traditional BTSs, the BTS3900 features simpler
structure and higher integration.
In this slide, we’ll mainly introduce the hardware system
structure, basic functions of modules and networking mode of
the BTS3900.
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Know the functions and features of BTS3900
Master the Hardware structure and function of BTS3900
Master the Network topologies of BTS3900
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BTS3900 Product Description ( V300R008_03)
BTS3900 Hardware Description ( V300R008_03)
BTS3900 Installation Guide ( V300R008_02)
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Chapter 1 BTS3900 System DescriptionChapter 1 BTS3900 System Description
Chapter 2 BTS3900 Hardware Structure
Chapter 3 BTS3900 Network Topology
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Location
PSTN ISDN
PSPDN
Um Interface
BTS3900
BTS3900
BTS3900
BTS
OMC
HLR/AUC/EIR
BSC
MSC/VLR
SMC/VM
A Interface
MAP
MAP
TUP,ISUPMS
MS
MS
MS: Mobile Station BTS: Base Transceiver Station BSC: Base Station Controller
HLR: Home Location Register AUC: Authentication Center EIR: Equipment Identity Register
MSC: Mobile Switching Center VLR: Visitor Location Register SMC: Short Message Center
VM: Voice Mailbox OMC: Operation and Maintenance Center DBS : Distributed Base Station
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Chapter 1 BTS3900 System Description
Chapter 2 BTS3900 Hardware StructureChapter 2 BTS3900 Hardware Structure
Chapter 3 BTS3900 Network Topology
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Component
Board/Module Full Name Parts in a Single Cabinet
Full Configuration Minimum Configuration
BSBC Universal BBU Subrack Backplane type C (2U)
1 1
UEIU Universal Environment Interface Unit ≥3 1
GTMU GSM Transmission and Management Unit for the BBU
1 1
UELP Universal E1/T1 Lightning Protection Unit
0 0
UBFA Universal BBU Fan unit type A (2U) 1 1
UPEU Universal Power and Environment interface Unit
2 1
DRFU Double Radio Filter Unit 6 1
DCDU-01 Direct Current Distribution Unit 1 1
GATM GSM Antenna and TMA Control Module 1 0
PMU Power and Environment Monitoring Unit 1 0
PSU (AC/DC) Power Supply Unit (AC/DC) 3 0
PSU (DC/DC) Power Supply Unit (DC/DC) 4 0
FAN Box FAN Box 1 1
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Section 1 System Structure
Section 2 Hardware Component
Section 3 DRFU Work Mode
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BTS3900 Cabinet
Cabinet size: H×W×D=900mm×600mm×450mm
Base size: H×W×D=400mm×600mm×420mm
Weight: 57kg(empty) /142kg(full configuration)
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BTS3900 Cabinet Structure
Fully configured cabinet (-48VDC) Fully configured cabinet (+24VDC) Fully configured cabinet (~220VAC)
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BTS3900 Cabinet Structure
Stacked cabinets in full configuration (-48VDC)
Stacked cabinets in full configuration (~220VAC)
Stacked cabinets in full configuration (+24VDC)
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BTS3900 Logical Structure
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Section 1 System Structure
Section 2 Hardware Component
Section 3 DRFU Work Mode
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BTS3900 ComponentsBTS 3900 Hardware consists of :
BBUDRFUDCDU-01GATMPMUPSUFAN BOX
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BBU Logical Structure
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BBU Hardware Structure
The typical power consumption of the BBU is 50 W.
The BBU is a small box with all the external ports on the front panel.
The BBU3900 boards consist of the BSBC, UEIU, GTMU, and UELP; the
BBU3900 modules consist of the UBFU and the UPEU.
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BBU Board--BSBC
The BSBC is the backplane of the BBU. The BSBC provides eight
board slots, two power slots, and one fan slot. The universal BBU sub-rack backplane type C (2U) (BSBC) provides
backplane interfaces for communication between boards and supplies
power for boards. The GTMU is located in slots 5 and 6, slot 7 for a main control board
that supports 3G, and other ports are as common slots.
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BBU Board--GTMU
The GSM transmission, timing, and management unit for BBU
(GTMU)
controls and manages the entire BTS. It provides interfaces related to
the reference clock, power supply, OM, and external alarm collection. The GTMU performs the following functions:Controls, maintains, and operates the BTS.Supports fault management, configuration management, performance management, and security management.Supports the monitoring of the fan module and power supply module.Distributes and manages BTS3900 clock signals.Provides clock input for testing.Provides port for terminal maintenance.Supports four E1 inputs.Provides CPRI ports for communication with the RF modules .
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BBU Board--GTMUPorts on the Panel
Port Type Description
CPRI0–CPRI5
SFP connector
Provides the input and output of optical and electrical transmission signals
ETH RJ45 connector
Local maintenance and commissioning
FE0 RJ45 connector
A reserved port that performs the following function:Connects the BBU to a routing device in the equipment room through the Ethernet cable to transmit network information
FE1 DLC connector
A reserved port that performs the following function:Connects the BBU to a routing device in the equipment room through the optical cable to transmit network information
USB USB connector
A reserved port that performs the following function:Automatically upgrades the software through the USB disk
TST USB connector
Testing of the output clock signals by using a tester
E1/T1 DB26 male connector
Provides the input and output of the four E1/T1 signals between the GTMU and the UELP or between the GTMU and the BSC.
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BBU Board--GTMULEDs on the board
LED Color Status Description
RUN Green On The board is faulty.
Off There is no power supply or the board is faulty.
Blinking once every two seconds The board is operational.
Blinking once every four seconds The OML link is abnormal.
Blinking four times per second The board is loading software.
ALM Red On A fault occurs in the running board.
Off An alarm is not generated.
ACT Green On The board is operational.
Off The board is faulty.
LIU0–LIU3 Green On A local E1/T1 alarm is generated.
Blinking four times per second A remote E1/T1 alarm is generated.
Off This link is not used or the alarm is cleared.
CPRI0–CPRI5
Green On The CPRI link is functional.
Red On The reception of the optical module is abnormal and an alarm is generated.
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BBU Board--GTMU DIP Switch
DIP Switch DIP Status Description
1 2
SW1 ON ON The E1 impedance is set to 75 Ω.
OFF ON The E1 impedance is set to 120 Ω.
ON OFF The T1 impedance is set to 100 Ω.
DIP Switch DIP Status Description
1 2 3 4
SW2 ON ON ON ON The E1 cable is grounded.
OFF OFF OFF OFF The E1 cable is not grounded.
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BBU Board--GTMU DIP Switch
DIP Switch
DIP Status Description
1 2 3 4
SW4 ON ON ON ON The E1 link can be bypassed.
OFF OFF OFF OFF The E1 link cannot be bypassed.
DIP Switch
DIP Status Description
1 2 3 4
SW5 ON ON ON ON The E1 link cannot be bypassed.
OFF ON ON OFF The E1 link of the Level 1 cascaded BTS can be bypassed.
ON OFF ON OFF The E1 link of the Level 2 cascaded BTS can be bypassed.
OFF OFF ON OFF The E1 link of the Level 3 cascaded BTS can be bypassed.
ON ON OFF OFF The E1 link of the Level 4 cascaded BTS can be bypassed.
OFF ON OFF OFF The E1 link of the Level 5 cascaded BTS can be bypassed.
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BBU Module--UBFA
The universal BBU fan unit type A (2U) (UBFA) communicates with
the
GTMU to regulate the temperature, adjust the fan speed, and report
alarms. The UBFA module is hot swappable.
Label Color Status Description
STATE Green 0.125s ON, 0.125s OFF
The module is not registered, and no alarm is reported.
1s ON, 1s OFF The module is running properly.
Red ON The module is reporting an alarm.
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BBU Module--UPEU
The universal power and environment interface unit (UPEU)
supports the –48V/ +24V DC power input, supplies power to the
boards, modules, and fan in the BBU, and provides access to
multiple environment monitoring signals. The UPEU performs the following functions:
Converting -48V or +24V DC to +12V DC that is applicable to the boards.Providing two RS485 signals and eight dry contact alarms.Providing reverse connection protection for power cable connectors.
UPEA UPEB
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BBU Module--UPEU
Ports on the Panel
Label Connector Description
PWR 3V3 +24 V/-48 V DC power input
EXT-ALM1 RJ45 Transmitting eight dry contact alarms
EXT-ALM0 RJ45
MON1 RJ45 Transmitting two RS485 environment monitoring signals
MON0 RJ45
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BBU Board--UEIU
The universal environment interface unit (UEIU) supports multiple
environment monitoring signals. The UEIU supports eight Boolean
alarm signals and two RS485 environment monitoring signals. The UEIU is optional. It is configured when the environment interfaces
are insufficient.Label Conne
ctorDescription
EXT-ALM1
RJ45 Transmitting eight dry contact alarms
EXT-ALM0
RJ45
MON1 RJ45 Transmitting two RS485 environment monitoring signals
MON0 RJ45
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BBU Board—UELPThe universal E1/T1 lightning protection unit (UELP) provides lightning
protection for four E1/T1 signals.
Port Type Cable Description
INSIDE DB25 male connector
E1 transfer cable of the BBU
Transfers the four E1/T1 signals between the UELP and the GTMU
OUTSIDE DB26 male connector
E1/T1 cables of the BBU
Provides the input and output of the four E1/T1 signals between the BBU and the BSC
The UELP has one DIP switch, which is used to set the impedance on the
E1/T1 port. There are four DIP bits on the DIP switch. DIP Switch DIP Status Description
1 2 3 4
S1 ON ON ON ON Applied to 75-ohm E1 cables in unbalanced mode.
OFF OFF OFF OFF Applied to other cases instead of 75-ohm E1 cables in unbalanced mode.
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BBU Cable connection
The BBU3900 cables are classified into the PGND cable, -48VDC
power cable, E1/T1 cable, E1 transfer cable, environment monitoring
signal cable, CPRI signal cable between the BBU and the RRU, and
BBU monitoring signal cable. The cable connection relations of the BBU are as follows:
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BBU Cables
The cables figure of the BBU
-48VDC power cables E1 transfer cable
FE cable CPRI optical cable
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DRFU Logical StructureThe DRFU performs modulation and demodulation between baseband
signals and RF signals, processes data, and combines and divides
signals.The DRFU consists of the high-speed interface unit, signal processing
unit, power amplifier, and dual-duplexer.
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DRFU Board Ports on the panel
Type Connector Ports Description
Port for transceiving RF signals
N female connector ANT1 Used in connection to the antenna subsystemANT2
CPRI port SFP female connector
CPRI0 Used in connection to the BBU, or in connection to the upper-level cascaded DRFU
CPRI1 Used in connection to the lower-level cascaded DRFU
Port for transmitting RF signals between DRFUs
QMA female connector
RX1 in Input port for diversity signals in antenna channel 1
RX1 out Output port of diversity signals in antenna channel 1
RX2 in Input port for diversity signals in antenna channel 2
RX2 out Output port of diversity signals in antenna channel 2
Power port 7W2 power connector
PWR Receives power input
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DRFU BoardLEDs on the Board
LED Status Meaning
RUN On The power input is normal, but the BBU is faulty.
Off There is no power supply or the module is faulty.
Blinking once every two seconds
The module is functional.
Blinking four times per second The module is loading software or is not started.
ALM On A fault alarm is generated.
Off No alarm is generated.
ACT On The module is functional and is correctly connected to the BBU.
Off The connection with the BBU is not established.
Blinking once every two seconds
The DRFU is being tested on the Site Maintenance Terminal.
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DRFU BoardLEDs on the Board
LED Status Meaning
VSWR Off (red) No VSWR alarm is detected.
Blinking once every two seconds (red)
The VSWR alarm is generated on only the ANT2 port.
Blinking four times per second (red)
The VSWR alarms are generated on the ANT1 and ANT2 ports.
On (red) The VSWR alarm is generated on only the ANT1 port.
CPRI0 On (green) The CPRI link is functional.
On (red) The interface module fails to receive signals.
Blinking once every two seconds (red)
The CPRI link has a loss-of-lock error.
CPRI1 On (green) The CPRI link is functional.
On (red) The interface module fails to receive signals.
Blinking once every two seconds (red)
The CPRI link has a loss-of-lock error.
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GATM ModuleThe GSM antenna and TMA control module (GATM) is a module
that controls the antenna and TMA. The GATM is optional.
The GATM performs the following functions:Controls the RET antenna
Feeds power to the TMA
Reports the RET control alarm signals
Monitors the current from the feeder
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GATM ModulePorts on the panel
Ports Connector Function
ANT0 SMA female connector
Providing power for the RET antenna and transmitting control signals for the RET antenna
ANT1 SMA female connector
Providing power for the antenna
ANT2 SMA female connector
Providing power for the RET antenna and transmitting control signals for the RET antenna
ANT3 SMA female connector
Providing power for the antenna
ANT4 SMA female connector
Providing power for the RET antenna and transmitting control signals for the RET antenna
ANT5 SMA female connector
Providing power for the antenna
COM1 RJ45 connector Used in connection to the BBU
COM2 RJ45 connector Providing the extended RS485 port to be cascaded with other devices
-48 V 7W2 power connector
Receiving the -48 V power input
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GATM ModuleLEDs on the board
LED Color Description Status Meaning
RUN Green Indicator of the board running status
Blinking once every four seconds
There is power supply but the communication with the BBU is abnormal.
Blinking once every two seconds
The board is running normally and the communication with the BBU is normal.
Off There is no power supply or the module is faulty.
ACT Green Indicator of the service running status
On The AISG link is normal.
Off The AISG link is abnormal.
Blinking frequently and irregularly
The AISG link is transmitting data.
ALM Red Alarm indicator
On An alarm is generated, such as an over-current alarm.
Off The module runs normally.
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DCDU-01 ModuleThe direction current distribution unit (DCDU-01) provides -48V DC
power of 10 outputs.The functions of the DCDU-01 are:
Receiving -48 V DC power input.Distributing the -48 V DC power of 10 outputs for boards and modules in
the cabinet.Providing surge protection of 10 kA in differential mode and 15 kA in
common mode and providing dry contact for surge protection failure.
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DCDU-01 ModulePanel of the DCDU-01 (10 outputs)
Name Label Description
Power input terminal
NEG(-) DCDU-01 low level input terminal
RTN(+) DCDU-01 high level input terminal
Power output port
SPARE2, SPARE1, BBU, FAN, and RFU5-RFU0
Power ports supplying the 10 outputs of power to the BBU, DRFU, GATM, and fan box
Power switch
SPARE2, SPARE1, BBU, FAN, and RFU5-RFU0
Power switch controlling the 10 outputs for the BBU, DRFU, GATM, and fan box
Alarm output port
SPD ALM Dry contact alarm output port
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PSU ModuleThe Power Supply Unit (PSU) converts the ~220V AC or +24V DC
power into the -48V DC power.
The PSU (AC/DC) has the following functions:Converts the 220 V AC power into the -48 V DC power.
Monitors alarms related to module faults (such as output over-voltage,
no output, and fan faults), alarms related to module protection (such
as over-temperature protection, and input over-voltage/under-voltage
protection), and power failure alarm.
Monitors the charging and discharging of the batteries.
The PSU (DC/DC) has the following functions:Converts the +24 V DC power into the -48 V DC power.
Monitors alarms related to module faults (such as output over-voltage,
no output, and fan faults), alarms related to module protection (such
as over-temperature protection, and input over-voltage/under-voltage
protection), and power failure alarm.
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PMU ModuleThe PMU manages the power supply and batteries. The PMU is
the core of the power monitoring system. The PMU performs the following functions:
Communicates with the central processing unit through the RS232/RS422
serial port.Manages the power system and the battery charging and discharging.Detects and reports water damage alarms, smoke alarms, door status
alarms, and standby Boolean value alarms; reports ambient humidity and
temperature, battery temperature, and standby analog values.Detects power distribution and reports alarms, and also reports dry
contact alarms.
(1) LEDs (2) Power supply test ports
(3) RS232/RS422 ports (4) Battery control switch
(5) COM port -(1) Backplane port (2) DIP switch
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PMU ModulePorts on the panel
Ports Function
RS232/RS422 port
Used in communication with the central processing unit.
Battery switch The battery switch has two control ports ON and OFF, which are used for switching on and switching off the battery.Press and hold the port ON for 5-10 seconds to switch on the battery.Press and hold the port OFF for 5-10 seconds to switch off the battery.
Power supply test port
Two power supply test holes -48V and 0V are available for measurement through an ordinary multi-meter.
COM port Used in connection to the external signal transfer board.
Backplane port
Used in connection to the backplane.
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PMU ModuleLED on the module
LED Color Status Description
RUN Green On for 1s and off for 1s
The module is functional, and the communication with the central processing unit is normal.
On for 0.125s and off for 0.125s
The module is functional, but the communication with the central processing unit fails.
On steady or off steady
The module is faulty if it is not in the power-on self-check state.
ALM Red On The following alarms are generated:Mains overvoltage or undervoltage alarmBusbar overvoltage or undervoltage alarmOvercurrent alarm during chargingBattery power-off alarmBattery circle circuit broken alarmAmbient temperature alarmAmbient humidity alarmWater immersion alarmSmoke alarmPower module alarmLoad power-off alarm
Off No alarm is generated.
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PMU ModuleDIP Switch
Bit 3 Bit 2 Bit 1 Bit 0 Monitoring Address
0 0 0 0 0000
0 0 0 1 0001
0 0 1 0 0010
0 0 1 1 0011
0 1 0 0 0100
0 1 0 1 0101
0 1 1 0 0110
0 1 1 1 0111
1 0 0 0 1000
1 0 0 1 1001
1 0 1 0 1010
1 0 1 1 1011
1 1 0 0 1100
1 1 0 1 1101
1 1 1 0 1110
1 1 1 1 1111
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FAN BoxThe fan box regulates the temperature at the air inlet of the cabinet
and in the fan box. It can adjust the rotation speed of the fans to
implement ventilation and dissipation for the cabinet.The fan box performs the following functions:
Provides forced ventilation and dissipation for the cabinet.Supports two modes of adjusting the rotation speed of the fans:
adjustment based on the temperature and adjustment controlled by the
central processing unit.Detects the temperature.Communicates with the central processing unit to report alarms and the
adjusted rotation speed of the fans based on the temperature to the
central processing unit.Stops the rotation of the fans when the ambient temperature is low.
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FAN BoxPorts on the panel
Type Silk-Screen
Connector Description
Power port -48 V 3V3 power connector
Used to introduce the -48 V DC power
Temperature sensor port
SENSOR RJ45 connector Used in connection to the external temperature sensor
Communication port
COM OUT RJ45 connector Used in connection to the lower-level cascaded fan box
COM IN RJ45 connector Used in communication with the central processing unit
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FAN BoxLEDs on the panel
LED Color Status Description
RUN Green Blinking four times per second
The communication with the central processing unit is not established but the module runs normally.
Blinking once every two seconds
The communication with the central processing unit is established and the module runs normally.
Off There is no power input and the module is faulty.
ALM Red Blinking once every two seconds
An alarm is generated.
Off No alarm is generated.
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Section 1 System Structure
Section 2 Hardware Component
Section 3 DRFU Work Mode
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BTS3900 Configuration Principles Configuration Principles of the BBU
Minimum number of trunk cables. You can determine the number of trunk cables as
required, and take the existing configuration for saving transmission resources into
account in networking.
Minimum number of UPEUs. The configuration of a single UPEU is recommended.
The redundancy backup mode can be configured if required.
One BBU supports six CPRI ports. The star topology is recommended between
DRFUs.
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BTS3900 Configuration Principle Configuration Principles of DRFU
A single DRFU does not support the S1/1 application; however, three DRFUs
support the S3/3 application.
The cell configuration of S4 and lower configurations use a single antenna, the
configurations of S5 to S8 use a double antenna, and the configurations of S8 to
S12 use a triple antenna.
The non-combination configuration is recommended for the DRFU to avoid the
power loss in combination and to reduce the power consumption of the BTS.
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DRFU Internal Structure2 TRXs and 2 duplexers are integrated in DRFU module which can be
connected to antenna directly.The RX_IN/OUT port of DRFU can support the receiving signal
interconnection between 2 DRFUs, so that it can support the diversity
receiving between 2 DRFUs.
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DRFU Antenna ModeSingle antenna, double receivers
The DRFU module has 1 working TX/RX feeder and 2 way receive diversity, one
of the receiver is from the another DRFU.
Double antennasThe DRFU module has 2 working TX/RX feeders and 2 way receive diversity.
Double antennas, 4 receiversThe DRFU has 2 working TX/RX feeders and 4 way receive diversity.
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DRFU Transmit and Receive Mode DRFU transmit mode
Transmit independency or combining
PBT
Transmit diversity
DRFU receive mode Two way receive diversity
Four way receive diversity
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DRFU Transmit Mode--Transmit Independency or Combining Transmit Independency
Transmit Combining
Interface Processing U
nit
DUP
DUP
CPRI0
CPRI1
ANT1
ANT2
Interface Processing U
nit
DUP
DUP
CPRI0
CPRI1
ANT1
ANT2
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DRFU Transmit Mode--PBT
In PBT mode, only the first TRX can work.
PBT mode can improve the transmitting power.
In PBT mode , only channel A is used by downlink signal.
Interface Processing U
nit
DUP
DUP
CPRI0
CPRI1
ANT1
ANT2
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DRFU Transmit Mode--Transmit Diversity
In this mode, only the first TRX can work
Transmit diversity mode improves the quality of downlink signal
In this mode , the signal from the first TRX is divided into 2 channels and be
transmitted through channel A and channel B.
Interface Processing U
nit
DUP
DUP
CPRI0
CPRI1
ANT1
ANT2
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DRFU Receive Mode-- Two Way Receive Diversity In this mode , both of the 2 TRXs can work
Each TRX receives the signal from 2 feeders
In the following figure , the TRX gets the receiving signal from channel A
and B of the single DRFU
It is also possible for TRX to use the channel A receiver of another DRFU
CPRI0
CPRI1
Interface Processing U
nit
DUP
DUP
ANT1
ANT2
RX-IN
RX_OUT
From RX-in, TRX can also use the channel A of the other DRFU, so
channel B of the two DRFUs are canceled.
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DRFU Receive Mode-- Four Way Receive Diversity In this mode, only the first TRX can work.
The working TRX gets the uplink signal from 4 feeders of 2 DRFUs.
CPRI0
CPRI1
Interface Processing U
nit
DUP
DUP
ANT1
ANT2
RX-IN
RX_OUT
2 channels from the other DRFU.
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Chapter 1 BTS3900 System Description
Chapter 2 BTS3900 Hardware Structure
Chapter 3 BTS3900 Network TopologyChapter 3 BTS3900 Network Topology
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BTS3900 Topology BTS Topology
The topologies of the BTS are classified into star, chain, tree, and ring topologies.
E1/T1 cable can be used between BBU and BSC or transmission equipment,
Optical and LAN cable can be used between BBU and route equipment.
DRFU Topology The BBU and DRFUs support multiple network topologies such as star, chain, and
ring topologies.
Only optical fiber can be used between DRFU and BBU.
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BTS Topology The topologies of the BTS are classified into star, chain, tree, and ring
topologies. Star mode Tree mode
Chain mode Ring mode
HUAWEI TECHNOLOGIES Co., Ltd. Page 62HUAWEI Confidential
DRFU Topology The BBU and DRFUs support multiple network topologies such as star, chain, and ring topologies.
HUAWEI TECHNOLOGIES Co., Ltd. Page 63HUAWEI Confidential
Summary
BTS3900 Function and Features
BTS3900 Hardware Structure, such as BBU and DRFU etc.
BTS3900 Network Topology
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